Genome-wide identification, classification, and expression profiling of serine esterases and other esterase-related proteins in the tobacco hornworm, Manduca sexta  

作　　者：Zelong Miao Chao Xiong Xiaolong Cao Tisheng Shan Qiao Jin Haobo Jiang 

机构地区：[1]Department of Entomology and Plant Pathology,Oklahoma State University,Oklahoma,Stillwater,USA

出　　处：《Insect Science》2023年第2期338-350,共13页昆虫科学（英文版）

基　　金：supported by NIH grants GM58634 and AI139998.

摘　　要：Serine esterases(SEs)are hydrolases that catalyze the conversion of carboxylic esters into acids and alcohols.Lipases and carboxylesterases constitute two major groups of SEs.Although over a hundred of insect genomes are known,systematic identification and classification of SEs are rarely performed,likely due to large size and complex composition of the gene family in each species.Considering their key roles in lipid metabolism and other physiological processes,we have categorized 144 M.sexta SEs and SE homologs(SEHs),114 of which contain a motif of GXSXG.Multiple sequence alignment and phylogenetic tree analysis have revealed 39 neutral lipases(NLs),3 neutral lipase homologs(NLHs),11 acidic lipases(ALs),3 acidic lipase homologs(ALHs),a lipase-3,a triglyceride lipase,a monoglyceride lipase,a hormone-sensitive lipase,and a GDSL lipase.Eighty-three carboxylesterase genes encode 29α-esterases(AEs),12 AEHs(e.g.,SEH4-1–3),20 feruloyl esterases(FEs),2 FEHs,2β-esterases(BEs),2 integument esterases(IEs),1 IEH,4 juvenile hormone esterases,2 acetylcholinesterases,gliotactin,6 neuroligins,neurotactin,and an uncharacteristic esterase homolog.In addition to these GXSXG proteins,we have identified 26 phospholipases and 13 thioesterases.Expression profiling of these genes in specific tissues and stages has provided insights into their functions including digestion,detoxification,hormone processing,neurotransmission,reproduction,and developmental regulation.In summary,we have established a framework of information on SEs and related proteins in M.sexta to stimulate their research in the model species and comparative investigations in agricultural pests or disease vectors.

关 键 词：CARBOXYLESTERASE ESTERASE LIPASE PHOSPHOLIPASE phylogenetic analysis RNA-Seq THIOESTERASE 

分 类 号：O62[理学—有机化学]